/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

using System.Diagnostics;
using System.Runtime.Serialization;
using Nest.Utf8Json;

namespace Nest
{
	/// <summary>
	/// A field of type token_count is really an integer field which accepts string values,
	/// analyzes them, then indexes the number of tokens in the string.
	/// </summary>
	[InterfaceDataContract]
	public interface ITokenCountProperty : IDocValuesProperty
	{
		[DataMember(Name ="analyzer")]
		string Analyzer { get; set; }

		[DataMember(Name ="enable_position_increments")]
		bool? EnablePositionIncrements { get; set; }

		[DataMember(Name ="index")]
		bool? Index { get; set; }

		[DataMember(Name ="null_value")]
		double? NullValue { get; set; }
	}

	/// <inheritdoc cref="ITokenCountProperty"/>
	[DebuggerDisplay("{DebugDisplay}")]
	public class TokenCountProperty : DocValuesPropertyBase, ITokenCountProperty
	{
		public TokenCountProperty() : base(FieldType.TokenCount) { }

		public string Analyzer { get; set; }

		public bool? EnablePositionIncrements { get; set; }

		public bool? Index { get; set; }

		public double? NullValue { get; set; }
	}

	/// <inheritdoc cref="ITokenCountProperty"/>
	[DebuggerDisplay("{DebugDisplay}")]
	public class TokenCountPropertyDescriptor<T>
		: DocValuesPropertyDescriptorBase<TokenCountPropertyDescriptor<T>, ITokenCountProperty, T>, ITokenCountProperty
		where T : class
	{
		public TokenCountPropertyDescriptor() : base(FieldType.TokenCount) { }

		string ITokenCountProperty.Analyzer { get; set; }
		bool? ITokenCountProperty.EnablePositionIncrements { get; set; }
		bool? ITokenCountProperty.Index { get; set; }
		double? ITokenCountProperty.NullValue { get; set; }

		public TokenCountPropertyDescriptor<T> Analyzer(string analyzer) => Assign(analyzer, (a, v) => a.Analyzer = v);
		public TokenCountPropertyDescriptor<T> EnablePositionIncrements(bool? enablePositionIncrements = true) =>
			Assign(enablePositionIncrements, (a, v) => a.EnablePositionIncrements = v);
		public TokenCountPropertyDescriptor<T> Index(bool? index = true) => Assign(index, (a, v) => a.Index = v);
		public TokenCountPropertyDescriptor<T> NullValue(double? nullValue) => Assign(nullValue, (a, v) => a.NullValue = v);
	}
}
